staging: lustre: uapi: remove libcfs.h from lustre_id.h/lustre_user.h

staging: lustre: uapi: remove libcfs.h from lustre_id.h/lustre_user.h

These are the last UAPI headers that contain libcfs.h which is
internal kernel header. Since it is not available to user land
remove libcfs.h and add the need headers that libcfs.h provided.

Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6245
Reviewed-on: https://review.whamcloud.com/22138
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>